A Debris Disk around the Central Star of the Helix Nebula?

Su, K. Y. L.; Chu, You‐Hua; Rieke, G. H.; Huggins, P. J.; Gruendl, R. A.; Napiwotzki, R.; Rauch, T.; Latter, William B.; Volk, Kevin

doi:10.1086/513018

Cited by 123 publications

(149 citation statements)

References 35 publications

Supporting

Mentioning

142

Contrasting

Order By: Relevance

“…We determined an average dust temperature of 30.8 K ± 1.4. We detected the central star disk at 70 µm, confirming the result of Su et al (2007). At other Herschel wavelengths we only have upper limits, hence the dust temperature of the disk of 65 K is only an estimate.…”

Section: Resultssupporting

confidence: 87%

See 1 more Smart Citation

Herschelimaging of the dust in the Helix nebula (NGC 7293)

Steene

Hoof

Exter

et al. 2015

A&A

View full text Add to dashboard Cite

Aims. In our series of papers presenting the Herschel imaging of evolved planetary nebulae, we present images of the dust distribution in the Helix nebula (NGC 7293). Methods. Images at 70, 160, 250, 350, and 500 µm were obtained with the PACS and SPIRE instruments on board the Herschel satellite.Results. The broadband maps show the dust distribution over the main Helix nebula to be clumpy and predominantly present in the barrel wall. We determined the spectral energy distribution of the main nebula in a consistent way using Herschel, IRAS, and Planck flux values. The emissivity index of β = 0.99 ± 0.09, in combination with the carbon rich molecular chemistry of the nebula, indicates that the dust consists mainly of amorphous carbon. The dust excess emission from the central star disk is detected at 70 µm and the flux measurement agrees with previous measurement. We present the temperature and dust column density maps. The total dust mass across the Helix nebula (without its halo) is determined to be 3.5 × 10 −3 M at a distance of 216 pc. The temperature map shows dust temperatures between 22 K and 42 K, which is similar to the kinetic temperature of the molecular gas, confirming that the dust and gas co-exist in high density clumps. Archived images are used to compare the location of the dust emission in the far infrared (Herschel) with the ionized (GALEX and Hβ) and molecular (H 2 ) component. The different emission components are consistent with the Helix consisting of a thick walled barrel-like structure inclined to the line of sight. The radiation field decreases rapidly through the barrel wall.

show abstract

Section: Resultssupporting

confidence: 87%

“…The white dwarf central star WD 2226-210 with a surface temperature of 103 600 ± 5500 K (Napiwotzki 1999) ionizes the asymptotic giant branch (AGB) nebula. Su et al (2007) also showed the presence of a 35-150 AU diameter debris disk around this central star.…”

Section: Introductionmentioning

confidence: 78%

Herschelimaging of the dust in the Helix nebula (NGC 7293)

Steene

Hoof

Exter

et al. 2015

A&A

View full text Add to dashboard Cite

show abstract

“…They are interpreted as circumbinary disks that formed during the mass-loss phase, or as debris disks either left over from the main sequence phase or built recently from tidally disrupted smaller orbiting bodies as discussed in e.g., Su et al (2007) or Brinkworth et al (2009). The plethora of different classes of objects with these disks (B[e] stars, symbiotic stars, RV Tau stars) indicates that they form relatively easily.…”

Section: Evolution Of the Diskmentioning

confidence: 99%

Disk evaporation in a planetary nebula

Gęsicki

Zijlstra

Szyszka

et al. 2010

A&A

View full text Add to dashboard Cite

Aims. Binary interactions are believed to be important contributors to the structures seen in planetary nebulae (PN), and the sole cause of the newly discovered compact dust disks. The evolution of these disks is not clear, nor are the binary parameters required for their creation. Methods. Using HST imaging and VLT spectroscopy, both long-slit and integral field, we study the Galactic bulge planetary nebula M 2-29 for which a 3-year eclipse event of the central star has been attributed to a dust disk. Results. The central PN cavity of M 2-29 is being filled with a decreasingly, slow wind. An inner high density core is detected, of radius smaller than 250 AU, interpreted as a rotating gas/dust disk with a bipolar disk wind. The evaporating disk is argued to be the source of the slow wind. The central star is the source of a very fast wind (∼10 3 km s −1 ). An outer, partial ring is seen in the equatorial plane, expanding at 12 km s −1 . The azimuthal asymmetry is attributed to mass-loss modulation by an eccentric binary. A crucial point in disk evolution is represented by M 2-29 where ionization causes the gas to be lost, leaving a low-mass dust disk behind.

show abstract

“…These disks are very different in nature from the one detected in the Hellix nebula (Su et al 2007). In the Hellix the disk is probably the final evolution of the Solar System Kuiper/belt analogue (see e. g. Bonson & Wyatt 2010).…”

Section: White Dwarfsmentioning

confidence: 65%

Planets, evolved stars, and how they might influence each other.

Villaver

2011

Proc. IAU

View full text Add to dashboard Cite

Abstract. Over the last 20 years planetary searches have revealed a wealth of systems orbiting stars on the main sequence. Most of these low-mass stars eventually will evolve into the Giant phases before entering the planetary nebulae (PNe) stage. In the last years, the presence of planets has also been discovered around more massive evolved stars, mostly, along the Red Giant but also along the Horizontal Branch. Moreover, disks have been found around White Dwarfs presumably formed by tidally disrupted asteroids. In all, there is evidence that an evolved (ing) star might influence the survival of planets. In this review I will try to summarize such evidence but furthermore I will present the other side of the story, that is, how the presence of a planet might alter the evolution of stars and with that the PN formation.

show abstract

A Debris Disk around the Central Star of the Helix Nebula?

Cited by 123 publications

References 35 publications

Herschelimaging of the dust in the Helix nebula (NGC 7293)

Herschelimaging of the dust in the Helix nebula (NGC 7293)

Disk evaporation in a planetary nebula

Planets, evolved stars, and how they might influence each other.

Contact Info

Product

Resources

About